12 



403. DISSOLVED BONEBLACK. 



Seut on from South Deerfield, Mass. 



PER CENT. 



Moisture at 100° C, 20.43 



Total Phosphoric acid, 16.14 



Soluble " " 15.81 



Reverted " " 0.18 



Insoluble " " 0.15 



Insoluble matter, 0.94 



Valuation per 2000 lbs., $25.64 

 The article is a fair representative of its kind, its moisture is 

 rather more than usual. 



■Valuation per 2000 lbs., $42.58 $46.28 $39.05 



The large amount of moisture in the last sample explains some- 

 what the lower percentage of potassium oxide. The principal ad- 

 mixture of salines in this brand of potash compounds consists of 

 common salt, usually from 14 to 18 per cent. 



407.— 408. WOOD ASHES. 



Sent on by So. Deerfield Farmers' Club. 



Moisture at 100° C, 



Phosphoric acid, 



Calcium oxide, 



Magnesium Oxide, 



Potassium oxide, 



Insoluble matter, 



The first article is evidently a partly leached wood ash. The two 



samples differ mainly in regard to their relative amount of potash. 



This difference expressed in money value amounts to from 26 to 27 



cents per hundred-weight of ashes, allowing 5.5 cents, per pound of 



potassium oxide in case of wood-ash. 



C. A. GOESSMANN, Director, 



Amherst, Mass. 

 The Bulletins of the Experiment Station will be sent free of charge to 

 all parties interested in its work, on application. 



J. E. Williams, Printer, Amherst, Mass. 



